This standard specifies the technical conditions and test methods for retroreflective safety signs used in mines. This standard applies to retroreflective safety signs installed underground or above all types of mines.
LD 88-1996 history
2008AQ 2014-2008 Specifications and testing methods of retroreflective safety signs for mines
1996LD 88-1996 Specifications and Testing Methods of Retroreflective Safety Signs for Mines